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Assembling welding process for casing of box type generator

A generator and casing technology, which is applied in the field of box-type generator casing assembly welding technology, can solve the problems of box-type generator casing quality cannot be guaranteed, affect work efficiency, and the welding process is cumbersome, etc., to achieve small verticality error , improve work efficiency, the effect of small parallelism error

Active Publication Date: 2009-05-13
SHANDONG QILU ELECTRIC MOTOR MFG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems that the quality of the current box-type generator casing cannot be guaranteed during welding, the welding process is too cumbersome, and affects work efficiency, etc. Advantages of box-type generator casing assembly welding process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] Welding method of the present invention is:

[0026] 1. Cutting

[0027] Heat treatment of the steel plate: (1) level the steel plate with a large 11-roller flat machine, and eliminate part of the stress at the same time; (2) perform sandblasting and derusting treatment on the steel plate; Process ribs are reserved for parts to form a closed type. On the one hand, it can reduce thermal deformation; on the other hand, it increases the rigidity of parts and facilitates assembly.

[0028] CNC flame cutting is used for blanking: a certain amount of shrinkage (1~2mm) is reserved to basically control the cutting thermal deformation, and the size error is guaranteed to be 1~1.5 / 2000;

[0029] Adjust the cutting specifications to make the cutting reach the B-level standard (JB / T10045.3-1999);

[0030] The upper outer cover plate is firstly cut separately, rolled into shape, and then welded together.

[0031] 2. Assembly

[0032] Use the horizontal upside-down method. That...

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PUM

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Abstract

The invention discloses a technology for welding the chassis of a box-typed generator. The method shows as follow: (1) blanking. (2) It assemblies the generator using a horizontal flip emancipating method. (3) It welds the chassis using a multi-passes and multi-layers welding method. (4)It corrects the products. (5)It eliminates some welding stress by a VSR technology. (6)It gets the final product through sandblasting in the end.

Description

technical field [0001] The invention relates to a welding process, in particular to a box-type generator shell assembly welding process. Background technique [0002] In terms of the casing of the air-cooled turbogenerator, a cylindrical structure was first adopted, and this structure is press-fitted inside the stator core. Since it is difficult to guarantee the dimensional accuracy of the casing after welding, the welded casing must be machined to the inner hole and both ends to achieve the required precision, and then the iron core can be press-fitted. This just causes the whole motor processing process to be loaded down with trivial details, and work efficiency can't be effectively improved. With the development of technology, the outer press-fitting of the stator core and the application of advanced VPI high-pressure impregnation technology, the structure of the casing has also developed from a cylindrical type to a box type (or Japanese) structure. The structural char...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K15/14
Inventor 闫方臣尚晓峰郭健苏启明李洪岭毛云山王鹏
Owner SHANDONG QILU ELECTRIC MOTOR MFG